To clear all speaker settings on your Libratone speaker you need to perform a factory reset.
Hold "Logo Button" while powering up the speaker (the button will pulse YELLOW).
Release the "Logo Button" when it turns solid YELLOW.
After 45 sec. of pulsing YELLOW the speaker will emit the WHITE setup blink sequence ("pulse-blink-pulse-blink" ...
... and so on) and enter Setup/PlayDirect Mode.
Please visit SETUP - Libratone Lounge here for instructions on how to setup the speaker.